Using the latest beta of motive, the latest optitrack plugin, and UE4 version 4.19.2; the editor crashes upon Play. I've followed both the documentation and the video guide precisely and still have some kind of error that crashes the engine.

Pasting the logs below, which really don't explain much. The plugin successfully connects to the host but doesn't describe anything happening after that (which is when the editor closes and the Epic Games report crash dialog opens).

The setup we are using is the motive machine is streaming the data locally over a router to another machine. The client machine doesn't have actual internet connection because it is connecting to the linking router. I'm not sure if this type of setup would have an impact on the plugin but it works just in Unity with the current plugin.